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We have zero hastle approach when it comes to shipping. Each purchase has all inclusive shipping. Shipping is included whether it is from us to you, you to us, or us back to you.

Moneyback Guarantee

Try it out! If you’re not satisfied, you can always return the mouth guard within 90 days for a full refund. If you are dissatisfied with your product for any reason, you can either contact Sentinel within 90 days for a full refund or opt to continue working with us until you get a great fitting guard. Our commitment is 100% satisfaction. We stand behind our products and exacting methods of fabrication. We guarantee you will love your Sentinel Athletic Mouth Guard! 90 Day Guarantee

20 reviews for Ultra Thin Clear Dental Retainers Upper & Lower Set

Rated 5 out of 5

Heidi G. – October 1, 2015:

Exactly what I needed! Thank you so much! -Heidi

Rated 5 out of 5

Alicia Browne – October 17, 2015:

This turned out to be the best thing ever! I was able to make custom dental impressions for both sets of my teeth and received my set of retainers about two weeks after mailing the impressions back. The fit is outstanding & Sentinels customer service is amazing. I got such prompt response and their absolute concern for my health and safety was nice to see.

Rated 5 out of 5

Eric Lopez – August 24, 2016:

I was looking at paying $600 for replacement dental retainers after my dog chewed them up. I am grateful to have found your service! The impression process was easy. I thought I might gag on the impression substance because at the dentist they used a messy, goopy mixture that fell to the back of my throat but luckily the impression substance sent to me was not like that at all. The girl on the phone said it is similar to playdoh and that is exactly right. Even smelled like mint! I just wanted to let you all know that I appreciate this service being available online and if my dog ever gets a hold of my new retainers again I will be back!

Took less than 4 weeks total from start to finish. I wish it was a bit quicker because I had a fear of my teeth shifting but nothing had changed and the guards arrived and fit perfectly. These are $300 at my dentist so I guess I’m willing to wait a bit to save the money.

Rated 5 out of 5

Carole(verified owner) – May 1, 2017:

This was a replacement retainer for another I had from a dentist which wore out in a year and a half. The Sentinel retainer fits very well, is thinner even than the old one and the price more affordable. Customer service was excellent – the first retainer I received did not fit perfectly so I contacted them via Live Chat and response was timely and helpful. Sentinel recast another retainer and also sent another dental impression kit in case the new one didn’t fit. Well, the recast retainer fit just fine so no need to do another impression. When Sentinel says they stand behind their product and want the client to be 100% satisfied, they follow through!

Rated 5 out of 5

Jaime Cabott – September 18, 2017:

Teeth molds were easy to take and the staff is incredibly responsive. I had a lot of questions about taking my molds of my teeth but the staff was patient with me and guided me through it. My retainers came back within about 1 1/2 weeks after sending off the molds. If I ever want or need new retainers I will go through this company again.

Rated 5 out of 5

Renee A. Miller – October 7, 2017:

Really liking these. My teeth are so sensitive now that my braces are off so I was hesitant to try this product. After reading the reviews I decided to try. This is a perfect option for me. The clear retainers fit perfect. No sensitivity and I’m loving the price!

Rated 5 out of 5

Morgan K. – November 16, 2017:

Never thought I would be able to buy dental retainers online! So nice to not have to deal with my dentist again now that my teeth are straight. I just want to keep them this way and I also grind my teeth at night so it is comforting to know that I can reorder these if I grind through them because they keep my dental impressions on file. Sweet!

Rated 5 out of 5

Deb Jordan – January 1, 2018:

I absolutely love this product. I recently had to switch to the hard dental retainers because I made a mistake when I ordered and bought upper and lower soft night guards instead. Much to my disappointment, the soft night guards arrived and obviously did not help keep my teeth straight. I contacted Sentinel Mouthguards and explained the error.

Customer service was excellent and the lab very quickly made my hard dental retainers and mailed them to me within a few days.

They fit perfectly. They’re made extremely well. I wear them during the day & night. Very satisfied customer!!

Rated 5 out of 5

Elizabeth Evans – January 3, 2018:

Bought these for my daughter. Nice customer service and nice product. Very easy to work with and at a fraction of the dental office cost. I’ll take it 😀

Rated 5 out of 5

KT – March 20, 2018:

This is going to sound like it’s not written by a customer but it is and I am a VERY HAPPY CUSTOMER. This may be the best purchase I have found. I’ve lost 3 sets of dental retainers and my mom was the one having to pay to replace them through the dentist. Well, I just ordered my second set of Sentinel retainers. Not because I lost these (not yet) but because I wanted a back-up ready just in case the inevitable happens and because they’re realistically priced/affordable I can pay for these on my own. A+++++

Rated 5 out of 5

Adrian N. – April 21, 2018:

I spent over $500 from my FSA account to have my final custom dental retainers made by my dentist. They fit perfectly, but apparently I grind my teeth too and had to get them replaced. There was no option from the dental office given except to order another set for $500. Umm… no! After reading the rave reviews for the Sentinel Mouthguards on Amazon, I decided to give them a try. I must say that I am extremely pleased and highly recommend them. The directions were easy to follow, I created a great fit myself. Not to mention that it saves me $360! I’m never bothering to order another set of retainers from the dental office. Literally saved me hundreds. Thank you!!

Rated 5 out of 5

Todd R. Theurer – April 25, 2018:

I wanted to write this review because my experience has exceeded my expectations. I have been wearing my dental retainers for 9 months and I also grind my teeth at night and ended up doing some damage to the retainers. I contacted Sentinel and they asked me to upload a picture to their email of the wear on the retainer. They still had my impressions on file and made me new dental retainers because I was still within my 1 year warranty. I don’t know of any other dental office or lab that would do that. They paid for the shipping and everything. I am impressed with the level of quality of the product, the customer service and the willingness to back up the warranty. Impressive and refreshing company.

Rated 5 out of 5

S. Blascoe – April 29, 2018:

I am not the type to write reviews but this product is outstanding and really works as advertised. Highly recommend to anyone who needs to keep their teeth straight after braces but not willing to pay the dentist’ price! Will be buying again if needed.

Rated 5 out of 5

Mike A. – May 9, 2018:

Great quality and great company! I was so happy when my retainers finally arrived to my door! I wasn’t sure if my impressions were going to be good enough so I emailed a couple of pictures of the impressions and they said it was best to send new impression kits to me to retake them. I got it right the second time and received my retainers yesterday! The fit is perfect. Thank you!

Rated 5 out of 5

J. Collins – May 22, 2018:

Better quality than what I got at my dental office. I would definitely recommend Sentinel Mouthguards to family and friends. I am very pleased with the fit of the product and customer service.

Rated 5 out of 5

Phillip Blatner – June 4, 2018:

It’s like the dentist ones. Pleased with the fit. I ordered the teeth whitening too and will review the whitening once results are in.

Rated 5 out of 5

Amanda D. – July 23, 2018:

Excellent fit and highly recommended! The process is easy. I was a bit wary about ordering online but after reading the reviews on this company I decided to give it a try. Great all around! Thanks Sentinel Team!

Rated 5 out of 5

William Morel – August 16, 2018:

I can’t say enough good things about this product and the companies customer service. The secret to getting a good fit is to read the instructions carefully and make sure that you submerge all of your teeth including the gum area evenly and do not remove until your 3 minutes is up! I had to learn this the hard way but the company sent me new impression kits at no cost! Second attempt worked! Very responsive and easy to work with. The guards felt a little tight on my teeth at first but became comfortable after a few nights.

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A Great Fitting Dental Night Guard for Teeth Grinding Minus the High Price Tag.

The secret is out.

Dental offices are charging anywhere from $500-$1500 for the exact same custom made dental appliances we are able to offer you at lab direct cost.

With a combined 30 years experience in the night guard industry, our dental lab technicians are trained extensively in safe and proper night guard fabrication.

How do we do it?

Our game is mouthguards and our team is lean and efficient. By cutting out the high costs of the dental assistants, offices and insurance companies, we eliminate all the middlemen and deliver the same high-quality product directly to the customer. Since we specialize in mouth guards and night guards without all the other dentist office expenses, we are able to use the highest quality materials, state of the art pressure forming machinery, trained technicians to deliver the highest quality product at a fraction of the cost.

Free Shipping

We have taken all the efforts to streamline the process of ordering your new custom fit mouthguard. Including pre-paying all the shipping.

We ship to you a kit with everything you need from the moulding trays and putty, to the pre-paid packaging the return it to us.

After we recieve your dental impression, we get right to work crafting a stone mould of your teeth. Once we have a stone casting of your teeth and gumline we craft a perfect mouthguard to fit your mouth. Guaranteed.

90 Day Guarantee

Try it out! If you’re not satisfied, you can always return the Mouthguard within 90 days for a full refund. Our commitment to you is 100% satisfaction. We stand behind our products and will provide you with nothing less than our personal best from our long-standing team. We guarantee you will love your Sentinel Mouth Guard product. If you are dissatisfied with your product for any reason, you can either contact Sentinel within 90 days for a full refund or opt to continue working with us until you get a great fitting guard.

We Want You To Smile

Sentinel Mouthguards is commited to your complete satisfaction. All orders are covered by our 90 day money back guarantee. If you have any questions, please give us a call.